11.   Symptoms usually begin with gradual memory loss and can proceed to confusion and erratic behavior.

12.   Symptoms can begin emerging four weeks after childbirth.

13.   Symptoms of atherosclerosis began to develop after a little as a month.

14.   Symptoms begin within a week.

15.   Symptoms typically begin with numbness, stumbling and partial blindness, and progress to total disability as the plaques knock out more of the brain function.

16.   The American Centers for Disease Control and Prevention set up a laboratory that can diagnose Ebola before symptoms begin.

17.   The test cannot be used for screening, Harrington said, because it detects the disease only after symptoms have begun.

18.   The symptoms typically begin six to eight hours after a person has arrived at high altitude, but they can occur within an hour.

19.   The symptoms usually begin two to five days after swimming and seem to affect children and young adults more, Murphey said.

20.   Tuberculosis becomes drug resistant when patients receive an incomplete mix of antibiotics or stop taking their pills when the symptoms begin to subside.